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The use of drip gas in cars and trucks is now illegal in many states. It is also harmful to modern engines due to its low octane rating, much higher combustion temperature than that of gasoline, and lack of additives. It has a distinctive smell when used as a fuel, which allowed police to sometimes catch people using drip gas illegally. [19] [15]
Natural gas liquids (NGL): propane, butanes and C 5 + (which is the commonly used term for pentanes plus higher molecular weight hydrocarbons) [20] [21] [22] Raw natural gas is commonly collected from a group of adjacent wells and is first processed in a separator vessels at that collection point for removal of free liquid water and natural gas ...
Natural gasoline is often used as a denaturant for fuel-grade ethanol, where it is commonly added volumetrically between 2.0% and 2.5% to make denatured fuel ethanol (DFE), or E98. This process renders the fuel-grade ethanol undrinkable.
Natural gas liquids are used either for fuel (sold as propane, or liquid petroleum gas (LPG), or for feedstock to the petrochemical industry. The United States has been the world's top producer of NGLs since 2010, and is far above second place Saudi Arabia, which produced 1.82 million barrels per day in 2015.
The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The range of heating value can span ±10 to 15 percent. A typical value of the higher heating value of LNG is approximately 50 MJ/kg or 21,500 BTU/lb. [2] A typical value of the lower heating value of LNG is 45 MJ/kg or 19,350 BTU/lb.
It shows the various unit processes used to convert raw natural gas into sales gas pipelined to the end user markets. The block flow diagram also shows how processing of the raw natural gas yields byproduct sulfur, byproduct ethane, and natural gas liquids (NGL) propane, butanes and natural gasoline (denoted as pentanes +). [50] [51] [52] [53]
NGL Prime SpA, a European launcher development company; National Gridiron League (Australia), a proposed American football league in Australia that never played; National Gridiron League (United States), a proposed American football league in the United States that never played; Nordic Golf League, a professional golf tour
NGL is first pumped as liquid to this pressure. A series of heat exchangers are used to regasify the LNG. These may include submerged combustion vaporisers, [15] or an intermediate fluid exchanger (using propane or other fluids), [16] or the use of waste heat from a nearby plant such as a power station. [17]